A shop owner wants to estimate the mean number of days an item stays in his store before it sold. How many items are needed to estimate the mean number of days an item stays in his store within 1 point with 99% confidence assuming s=3 based on earlier studies? Round up your answer.
A shop owner wants to estimate the mean number of days an item stays in his...
Question 19 2 pts 7. A shop owner wants to estimate the mean number of days an item stays in his store before it sold. How many items are needed to estimate the mean number of days an item stays in his store within 3 points with 95% confidence assuming s=4 based on earlier studies? O 3 O 6 O 7 O2
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 33 points with 99%confidence assuming s=13.2 based on earlier studies? Suppose the doctor would be content with 95 % confidence. How does the decrease in confidence affect the sample size required? A 99% confidence level requires_____ subjects? (Round up to the nearest subject) A 95% confidence level requires _____subjects? (Round up to the...
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99% confidence assuming s 16.5 based on earlier studies? Suppose the doctor would be content with 90% confidence. How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. subjects. (Round up to the nearest subject.) A 99% confidence...
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99 % confidence assuming s 19.5 based on earlier studies? Suppose the doctor would be content with 90 % confidence How does the decrease in confidence affect the sample size required? Click the icon to view a partial table of critical values. A 99% confidence level requiressubjects. (Round up to...
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99 % confidence assuming s equals 10.1 based on earlier studies? Suppose the doctor would be content with 95 % confidence. How does the decrease in confidence affect the sample size required? LOADING... Click the icon to view a partial table of critical values. A 99% confidence level requires nothing...
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99 % confidence assuming s equals 15.4 based on earlier studies? Suppose the doctor would be content with 90 % confidence. How does the decrease in confidence affect the sample size required?
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99 % confidence assuming s equals 19.2 based on earlier studies? Suppose the doctor would be content with 95 % confidence. How does the decrease in confidence affect the sample size required?
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 4 points with 99 % confidence assuming s equals 19.7 based on earlier studies? Suppose the doctor would be content with 90 % confidence. How does the decrease in confidence affect the sample size required? A 99% confidence level requires ____subjects. (Round up to the nearest subject.) A 90% confidence level requires _____subjects....
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 3 points with 99% confidence assuming s=13.9 based on earlier studies? Suppose the doctor would be content with 95% confidence. How does the decrease in confidence affect the sample size required? Partial Critical Value Table Level of Confidence, (1α) times •100% Area in Each Tail, α/2 Critical Value, zα/2 90% 0.05 1.645 95%...
A doctor wants to estimate the mean HDL cholesterol of all 20- to 29-year-old females. How many subjects are needed to estimate the mean HDL cholesterol within 2 points with 99 % confidence assuming s equals 10.7 based on earlier studies? Suppose the doctor would be content with 95 % confidence. How does the decrease in confidence affect the sample size required? A 99% confidence level requires nothing subjects A 95% confidence level requires ?? subjects How does the decrease...